# E-Tuner 4

> Utilities

Canonical page: [https://chrome-stats.com/d/id1579096205](https://chrome-stats.com/d/id1579096205)

## Overview

- **ID:** `id1579096205`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Edelbrock Corp
- **Category:** Utilities
- **Rating:** 4.00 / 5 (23 ratings)
- **Version:** 4.0.22
- **Last updated:** 2026-04-23
- **First published:** 2021-08-03
- **Size:** 50 MB
- **Data as of:** 2026-09-19
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/e-tuner-4/id1579096205)
- **Website:** [https://www.youtube.com/watch?v=DiYhxPsee3s](https://www.youtube.com/watch?v=DiYhxPsee3s)
- **Privacy policy:** [https://www.edelbrock.com/privacy-policy](https://www.edelbrock.com/privacy-policy)

## Description

E-Tuner 4 is Edelbrock's iOS app for Pro-Flo 4 and EZ Street EFI Systems.

E-Tuner 4 is Edelbrock's latest exclusive iOS app for the Pro-Flo 4 and EZ Street EFI Systems.

E-Tuner 4 communicates with your PF4 or EZ Street ECU via Bluetooth, so you can manage and live-tune a variety of ECU settings such as air-fuel ratios, ignition timing, idle speed, acceleration fuel, or cold start mixture as well as monitor engine and sensor data in real-time wirelessly from your iPhone or iPad.

The E Tuner 4 Setup Wizard simplifies your Pro Flo 4 or EZ Street EFI setup by assisting you with selecting the proper base calibration for your specific application. All you need to know is the engine displacement (CID) and camshaft, and kit specifications, and you're good to go!

E-Tuner 4 applies a solid base calibration so you can run the vehicle without having to change any tuning settings. But, if you'd like to make changes, E-Tuner 4 offers a selection of "Advanced Tuning" functions to help dial in your calibration and get the vehicle’s performance exactly where you want it. Whether you'd like to run a bit leaner while cruising for improved mileage, or advance timing for more performance, the Advanced Tuning section is there for you. A diagnostic page for troubleshooting purposes is also available.

Once you're up and running, feel free to explore E-Tuner 4’s vivid gauge displays to monitor your engine's performance. Unlike other tuning hand-held combos, you can actually use your phone or tablet as a mini-dashboard once you're done tuning.

You can also preview E-Tuner 4 without being connected to an Edelbrock EFI System by enabling "Demo Mode." This will allow you to access the app's main features, and interact with pages like the Setup Wizard, Advanced Tuning, and Gauge Displays to get a feel for how E-Tuner 4 functions.

*** Warning! ***
E-Tuner 4 is only compatible with the Edelbrock Pro-Flo 4 and EZ Street EFI Systems. It is NOT compatible with V1 E-Street, V2 E-Street, or Pro-Flo 3 EFI systems nor does it work with other Edelbrock Legacy EFI Systems.

The E-Tuner 4 app supports all iPhones and iPads running iOS 16 and higher at this time. Please check back later for updates

## Rankings

- #248,595 — Overall

## Review summary

Reviews for E-Tuner 4 on iOS show appreciation for the iOS version and ease of use, with on-the-fly tuning and telemetry praised. However, multiple reviews converge on several recurring issues: slow or absent updates, problematic temperature readings in past versions, limited gauge customization, and iPhone/iOS connectivity problems. The most mentioned concerns focus on update cadence, temperature accuracy, gauge configurability, and iOS compatibility, while positives center on parity with Android and user-friendly operation.

### Pros

- iOS version exists and parity with Android features.
- The app is easy to use.
- Tuning on the fly is supported.
- Telemetry data is available and helpful.

### Cons

- Update cadence is poor; reviews repeatedly request updates and note long gaps.
- Temperature readings are inaccurate in some versions and have required fixes.
- Gauge display/configuration is limited; users want more customization (contrast, digital/analog, size, placement).
- iPhone/iOS connectivity and pairing issues persist compared to Android.

## Similar extensions and apps

- [E-Tuner 4+](https://chrome-stats.com/d/id1589779289) — 5.00 / 5
- [Screamin' Eagle Street Tuner](https://chrome-stats.com/d/id1642944755) — 1.70 / 5
- [Fuelpak FP4](https://chrome-stats.com/d/id1513978426) — 1.80 / 5
- [TC Tuner](https://chrome-stats.com/d/id1579604513)
- [PowerVision 4](https://chrome-stats.com/d/id1559102553) — 4.90 / 5
- [ECU Connect](https://chrome-stats.com/d/id1140860609) — 4.00 / 5
- [Tuner Assist](https://chrome-stats.com/d/id1182909055) — 3.00 / 5
- [Holley Terminator X](https://chrome-stats.com/d/id6736920316) — 4.40 / 5
- [iTSX](https://chrome-stats.com/d/id461100848) — 2.30 / 5
- [EZ-TCU Trans Controller](https://chrome-stats.com/d/id1434677792) — 3.90 / 5
- [JB4 PRO](https://chrome-stats.com/d/id6746129072) — 4.40 / 5
- [TCI TUNER](https://chrome-stats.com/d/id6499452376)

---

Source: [Chrome-Stats](https://chrome-stats.com/d/id1579096205)